What's the best exhaust system for a 3.2 V6 FSI?
 

I'm looking for an exhaust system or muffler for my 06 A6 3.2 V6. I'm just looking for a moderate or mild volume with a good deep tone (if it's possible on a V6) nothing too loud or obnoxious but as long as it sounds good I'm fine with it. I'd prefer it the price to be under $500 all said and done. Thanks